1277369 ⑴ 玖、發明說明 (發明說明應敘明：發明所屬之技術領域、先前技術、内容、實施方式及圖式簡單說明) 技術領域 本發明係關於一種用於操作一個或多個低壓氣體放電燈 之電路配置’其包含一電流反相器和一用於該電流反相器 之驅動裝置。 先前技術 5玄種用於操作一個或多個低壓氣體放電燈之電路配置係 已知於DE 44 3 6 463 A1。尤指一種適用於操作小型低壓氣 體放電燈之電路配置，該小型低壓氣體放電燈之電路配置 之刼作電壓超過反相器所產生之交流電壓且係適用於操作 迷你型磷光燈。在這些電路配置中，共振增強之原理不僅 係用於產生低壓氣體放電燈所需之點亮電壓，且亦用於供 2垭之知作電壓。這暗指一處於操作電壓下之反應功率通 量。1277369 (1) Description of the invention (description of the invention should be stated: the technical field, prior art, content, embodiment and schematic description of the invention) FIELD OF THE INVENTION The invention relates to a method for operating one or more low-pressure gas discharge lamps The circuit configuration 'includes a current inverter and a drive for the current inverter. Prior Art 5 The circuit configuration for operating one or more low-pressure gas discharge lamps is known from DE 44 3 6 463 A1. In particular, a circuit configuration suitable for operating a small low-pressure gas discharge lamp having a circuit configuration that exceeds the AC voltage generated by the inverter and is suitable for operating a mini phosphor. In these circuit configurations, the principle of resonance enhancement is not only used to generate the lighting voltage required for a low-pressure gas discharge lamp, but also for the known voltage. This implies a reactive power flux at the operating voltage.
私i:亦可利用如us 6，181，〇79 Μ所說明之變壓器予以 產生。該等變壓器不僅使用不便而且笨重。 °。 發明内容 燈之“目的因而在於指示一種用於點亮並操作該考 一-屬二 更尤指一種電路配置，該電路配置自 "、-知電壓饋送予一液晶顯示器之背f笋& 11 ν 4 個低壓氣體放電燈。 η先中之硬彰 此目的係依據申杜直釗欣网# 。根據本發明 專利犯圍弟1項之特有特徵予以達成 電壓。 —第二電流反相器產生—相位偏移180。之 -6- 1277369Private i: It can also be generated by a transformer as described in us 6, 181, 〇 79 。. These transformers are not only inconvenient and cumbersome to use. °. SUMMARY OF THE INVENTION The purpose of the lamp is therefore to indicate that one is used to illuminate and operate the test-genus, and more particularly to a circuit configuration that is configured from a ",--a voltage is fed to the back of a liquid crystal display. 11 ν 4 low-pressure gas discharge lamps. η first in the hard to demonstrate this purpose is based on Shen Du Zhi Xin Xin Net #. According to the unique characteristics of the patent of the patent, the voltage is reached. - Second current inverter Generated - phase offset 180. - 6 - 1277369
卿說_頁 現今之液晶顯示器’亦簡稱為LCD，也用作液晶圖像螢 幕。液晶圖像螢幕係被動式顯示系統，亦即本身不發光。 這些圖像螢幕之原理係基於光是否通過液晶層。這音、指需 要-額外光源用於產生-圖像。為此，一人造光係在背景 發光糸統中予以產生。隨著液晶圖像螢幕之尺寸增加，該 等圖像螢幕中背景發光系統之效能程度亦提升^於這^ 背景發光系統，期望具有小直徑之燈。與發光配置中之其 匕低Μ氣體放電燈相比較，液曰闰沒级 竿乂 ，夜日日圖像螢幕之背景發光系統 中之低壓氣體放電燈具有2^至3 5釐米之較小内徑以及 從而具有四至八倍高之燈電壓。液晶顯示器中例如得知於 EP 1 263 02 1 A1之瑟羅萊特（CeraHght)燈的較薄燈以则至 權伏特之操作電壓工作，且底下簡稱為冷陰極登光燈或 CCFL之冷陰極燈係以6〇〇至_伏特之操#電廢工作。用以 啟動這些燈之點亮電壓尤為兩倍高。這些用於薄低壓氣體 放電燈之高點亮及操作電壓係不用到變壓器而產生，因為 低廢氣體放電燈之雷；:眉孫益+ Am 士 μ ^，原係猎由兩個串聯交流電壓予以供應 。由於這兩個交流電屡具有18〇。之相位差，故施加至低壓 氣體放電燈之電磨係兩交流電堡之總合。另外，這些交流 電堡係以共振電路中適度之反應功率通量予以產生。為此 ，電路配置在液晶圖像螢其之封 … 口 V蛍秦之封閉外罩中具有低功率漏損 且從而具-有-較小之熱負载。 -電路配置有利地將直流電麗轉換成交流電壓並饋送予 -個或許多個燈，該一個或許多個燈皆使用功率切換哭中 之一種全橋式切換電路作為-電流轉換器及兩共振電路， (3) (3)1277369 發明說明纘 i 每^ =電路皆包含4聯線圈、-串聯電容器以及 、…谷益。電路配置中每一個燈各包含一全橋式電 ::轉換器和-共振電路。這使得任何數目之燈皆；用一 Γ；^Γ轉換器予以操作。轉換器因而係可調整的。 Γ轉換器之優點在於與半橋式轉換器相比較，不需 55 . 又輸出。故兩個半橋式轉換 二’〜〇。之相位工作。正常操作下之功率通量和 k之點党係由切換頻 .θ , 貝丰予以控制。共振電路之輸入阻抗 接：〜疋屬於歐姆性，致使全橋式轉換器之功率半導體 以取低切換漏損操作。此架構之優點在於並聯電容器且 有較低之電壓負載。 σσ /、 、'辰電路之木構可進一步作成另三種電路配置。有利地 第一電路配置將直流電流轉換成交流電流並饋送予一 個：多個㉟，該-個或多個燈各利用功率切換器中之全橋 :私路作為一電流轉換器、丨串聯電容器和兩共振電路， 每個共振電路皆包含一串聯線圈和一並聯電容器。 一第三電路配置有利地將直流電流轉換成交流電流並饋 达予一個或多個燈，該一個或多個燈各利用一含有功率切 換為之全橋式切換電路作為一電流轉換器和一共振電路， 其中共振電路包含一串聯線圈、一串聯電容器和_ 容器。-- 电 第四電路配置有利地將直流電流轉換成交流電流並饋 迗予一個或多個燈，該一個或多個燈各利用一具有功率切 換為之全橋式切換電路作為一電流轉換器、兩串聯電容哭 -8 - (4) !277369Qing said that _ page of today's liquid crystal display, also referred to as LCD, is also used as a liquid crystal image screen. The liquid crystal image screen is a passive display system, that is, it does not emit light by itself. The principle of these image screens is based on whether light passes through the liquid crystal layer. This tone, refers to the need - an extra light source is used to generate the image. To this end, an artificial light system is produced in the background illumination system. As the size of the liquid crystal image screen increases, the degree of performance of the background illumination system in the image screens also increases. In this background illumination system, it is desirable to have a small diameter lamp. Compared with the lower gas discharge lamp in the illuminating configuration, the liquid helium is not level, and the low-pressure gas discharge lamp in the background illumination system of the night-day image screen has a smaller inner diameter of 2^ to 35 cm. The diameter and thus the lamp voltage of four to eight times higher. In the liquid crystal display, for example, the thinner lamp of the CeraHght lamp of EP 1 263 02 1 A1 is operated with an operating voltage of up to Volt, and the cold cathode lamp of the cold cathode or CCFL is simply referred to below. It is operated by 6〇〇 to _伏特# electric waste. The lighting voltage used to activate these lamps is typically twice as high. These high-lighting and operating voltages for thin low-pressure gas discharge lamps are generated without the use of transformers because of the low exhaust gas discharge lamp lightning;: Mei Sun Yi + Am Shi μ ^, the original hunting by two series AC voltage Supply. Because these two ACs have 18 turns. The phase difference is such that the electric grind applied to the low-pressure gas discharge lamp is the sum of the two AC bunkers. In addition, these AC castles are generated with moderate reactive power fluxes in the resonant circuit. For this reason, the circuit configuration has a low power leakage in the closed casing of the liquid crystal image, and thus has a small heat load. The circuit arrangement advantageously converts the direct current to an alternating voltage and feeds to one or more of the plurality of lamps, the one or more of which use a full bridge switching circuit of the power switching crying as the current converter and the two resonant circuits (3) (3) 1277369 Description of the invention 缵i Each circuit includes four coils, a series capacitor, and ... Each of the lamps in the circuit configuration includes a full bridge electrical converter and a resonant circuit. This allows any number of lights to be used; it is operated with a Γ; The converter is thus adjustable. The advantage of the Γ converter is that it does not need to be compared to a half-bridge converter. Therefore two half bridges convert two '~〇. Phase work. The power flux under normal operation and the point of the k-party are controlled by the switching frequency .θ, Befeng. The input impedance of the resonant circuit is connected to: 疋 is ohmic, resulting in a power semiconductor of the full bridge converter to reduce switching leakage operation. The advantage of this architecture is that the capacitors are shunted and have a lower voltage load. The wood structure of σσ /, and '辰 circuits can be further developed into three other circuit configurations. Advantageously, the first circuit configuration converts the direct current into an alternating current and feeds it to a plurality of 35, each of which utilizes a full bridge in the power switch: the private path as a current converter, a tantalum series capacitor And two resonant circuits, each of which includes a series coil and a parallel capacitor. A third circuit configuration advantageously converts the direct current into an alternating current and feeds it to one or more lamps, each of the one or more lamps utilizing a full bridge switching circuit including power switching as a current converter and a A resonant circuit, wherein the resonant circuit comprises a series coil, a series capacitor and a _ container. The fourth electrical circuit arrangement advantageously converts the direct current into an alternating current and feeds it to one or more lamps, each of the one or more lamps utilizing a full bridge switching circuit having power switching as a current converter , two series capacitors cry -8 - (4) !277369
串聯線圈和一並聯電容 和一共振電路，該共振電路包含_ 器。 並聯電容器係有利地至少部分藉由—介於燈與金屬部分 之間的寄生電從而燈電極與顯示器之導電部分予以形 成，其中顯示器係例如反射器。 ^ 17以一種推拉模式開啟及關閉。-矩狀信號波形係出現在 :介於功率-半導體16與17之間的節點Μ。控制電路η控制 第二反相器15 ’使得功率半導體㈣^亦以一種推拉模式 開及關閉 矩狀彳s號波形亦出現於一介於功率半導體 18與19之間的節點26。兩反相器丨彳和η係以相&之相位工 圖1表示-電子電路配置1’該電子電路配置丨包含一全橋 式切換電路2、一電壓源3、兩低通濾波器4與5、一第―二 切換電路6、另兩個低通濾波器7與8以及一第二燈切換電^ 9。導電線1〇, UW2係連接至另外的燈切換電路(未示）。 全橋式切換電路2在底下亦稱為全橋式反相器，其包含一押 制電路13和兩電流轉換器14與15。底下亦稱為反相器之； 流轉換器14包含兩個功率切換器16與17,1第二反相化 亦包含兩個功率切換器18與19。如雙極電晶體、亦屬於金 氧半場效電晶體_SFET)之IGBT(積冑間雙極電晶體）之 類的功率半導體係用作功率切換器。第—燈切換電路6包含 兩串聯線圈20與21、兩並聯電容器22與23以及—低壓氣體 放電燈24。第二燈電路9為一同樣具有元件2〇至24之類似架 構。控制電路13控制第-反相器Η，使得功率半導體16和 1277369 v j 發明說明纘頁 作，致使兩矩狀信號波形之相位偏移1 8〇。。低通濾波器4, 5, 7和8將高頻成分濾掉，致使兩正弦信號到達燈以時之相位 差為180◦。串聯線圈2〇與並聯電容器22形成一第一共振電 路20, 22，線圈21和電容器23形成一第二共振電路21，23。 低通濾波器4與5、線圈20與21以及燈24係在兩節點以與％ 之間呈串聯連接。電容器22, 23係與燈24呈並聯且係連接至 直流電壓源3之負極。燈電壓之一半係分別經由電容器22 與2 3予以施加。 圖2表示一出現於節點25之矩狀信號波形3丨。一類似之 仏號波形係出現於節點26。兩矩狀信號波形之相位差為 180。。 圖3表示一正弦信號波形32，該正弦信號波形32係藉由低 通渡波器4而有平滑之波形。 圖4表示一正弦曲線32以及一經由低通濾波器5過濾後相 位與正弦曲線32相差180。之第二正弦曲線33。依此方式， 一呼應於電壓供應器3電壓值之最大電壓振幅34於燈24產 生。 圖5表示一含有一全橋式反相器2以及燈切換電路6與9之 第二電路配置41。兩低通濾波器42與43對所有燈電路6與9 將高頻成分渡掉。 圖6表-示一含有全橋式反相器2、電壓源3以及兩燈切換 電路52與53之第三電路配置5卜在兩位於燈電路52中之節 點2 5與2 6之間，將合起來功用為低通濾波器之電容器5 4 、線圈55與電容器56連接起來，並連接與電容器56並聯之 1277369 ⑹ 低壓氣體放電燈9 4 55, 56。 發明說明續頁 線圈55與電容器56形成一共振電路 線圈55之電感值A岭 Λ 1星為、、泉圈2〇之兩倍，電容器56之電容 電容器22之一丰。休加帝— 、、 牛 35越電谷器56有一呼應於燈電壓之電壓 降。 2 一具有兩串聯電容器62, 63之電路配置61，該兩A series coil and a shunt capacitor and a resonant circuit, the resonant circuit comprising _. The shunt capacitor is advantageously formed at least in part by parasitic power between the lamp and the metal portion such that the lamp electrode and the conductive portion of the display are formed, such as a reflector. ^ 17 is turned on and off in a push-pull mode. - The momentary signal waveform appears at: node 介于 between power-semiconductors 16 and 17. The control circuit η controls the second inverter 15' such that the power semiconductor (4) is also turned on and off in a push-pull mode. The rectangular 彳s waveform also appears at a node 26 between the power semiconductors 18 and 19. The two inverters η and η are represented by phase & phase diagram 1 - electronic circuit configuration 1 'the electronic circuit configuration 丨 includes a full bridge switching circuit 2, a voltage source 3, and two low pass filters 4 And 5, a 1-2 switching circuit 6, two other low pass filters 7 and 8 and a second lamp switching device. The conductive line 1 〇, UW2 is connected to another lamp switching circuit (not shown). The full bridge switching circuit 2, also referred to below as a full bridge inverter, includes a pad circuit 13 and two current converters 14 and 15. Also referred to as the inverter underneath; the stream converter 14 includes two power switches 16 and 17, and the second inverting also includes two power switches 18 and 19. A power semiconductor such as a bipolar transistor or an IGBT (an inter-electrode bipolar transistor) which is also a metal oxide half field effect transistor (SFET) is used as a power switcher. The first lamp switching circuit 6 includes two series coils 20 and 21, two parallel capacitors 22 and 23, and a low pressure gas discharge lamp 24. The second lamp circuit 9 is a similar structure having elements 2A through 24. The control circuit 13 controls the -inverter Η such that the power semiconductors 16 and 1277369 v j are described in the following pages, causing the phase of the two rectangular signal waveforms to be shifted by 18 〇. . The low pass filters 4, 5, 7 and 8 filter out the high frequency components such that the phase difference between the two sinusoidal signals arriving at the lamp is 180 ◦. The series coil 2'' and the shunt capacitor 22 form a first resonant circuit 20, 22, and the coil 21 and the capacitor 23 form a second resonant circuit 21, 23. The low pass filters 4 and 5, the coils 20 and 21, and the lamp 24 are connected in series at two nodes to be in series with %. Capacitors 22, 23 are connected in parallel with lamp 24 and are connected to the negative terminal of DC voltage source 3. One half of the lamp voltage is applied via capacitors 22 and 23, respectively. Figure 2 shows a rectangular signal waveform 3 出现 appearing at node 25. A similar nickname waveform appears at node 26. The phase difference between the two rectangular signal waveforms is 180. . Figure 3 shows a sinusoidal signal waveform 32 which has a smoothed waveform by the low pass waver 4. Figure 4 shows a sinusoidal curve 32 and a phase shifted by a low pass filter 5 which is 180 different from the sinusoidal curve 32. The second sinusoid 33. In this manner, a maximum voltage amplitude 34 corresponding to the voltage value of the voltage supply 3 is generated at the lamp 24. Figure 5 shows a second circuit arrangement 41 comprising a full bridge inverter 2 and lamp switching circuits 6 and 9. The two low pass filters 42 and 43 pass high frequency components to all of the lamp circuits 6 and 9. 6 shows a third circuit configuration 5 including a full bridge inverter 2, a voltage source 3, and two lamp switching circuits 52 and 53 between two nodes 2 5 and 26 located in the lamp circuit 52. A capacitor 5 4 having a low-pass filter, a coil 55 connected to the capacitor 56, and a 1277369 (6) low-pressure gas discharge lamp 9 4 55, 56 connected in parallel with the capacitor 56 are connected. SUMMARY OF THE INVENTION The coil 55 and the capacitor 56 form a resonant circuit. The inductance value of the coil 55 is A Λ 1 star, twice the spring coil 2, and the capacitor 56 of the capacitor 56 is abundant. The Hugh Gard-, and the Bull 35-Electric Valley 56 has a voltage drop corresponding to the lamp voltage. 2 a circuit configuration 61 having two series capacitors 62, 63, the two
κ在起之電谷為62, 63係對所有燈電路52, 53工作。 圖8表不描繪電壓對頻率關係之曲線圖。共振電路之交 二功率增益函數係表示為切換頻率之函數。為了點亮一低 [氣體放電4 ’全橋式電路由_啟始頻率7 i開#，降低切 換頻率直到燈於一點亮頻率72點亮，並進一步降低切換頻 率至一操作頻率7 3。 圖式簡單說明 —為了更加瞭解本發明，實施方式中已引用圖式對一具體 實施例之例子作進一步解釋，在實施方式中：κ is in the electric valley for 62, 63 series for all lamp circuits 52, 53. Figure 8 does not depict a plot of voltage vs. frequency. The intersection of the resonant circuits The two power gain functions are expressed as a function of the switching frequency. In order to illuminate a low [gas discharge 4 ′ full-bridge circuit by _starting frequency 7 i open #, the switching frequency is lowered until the lamp illuminates at a lighting frequency 72, and the switching frequency is further lowered to an operating frequency 7 3 . BRIEF DESCRIPTION OF THE DRAWINGS In order to provide a better understanding of the present invention, the embodiments of the present invention are further explained by reference to the drawings, in which:
圖1表示一用於將直流電流轉換成交流電流並饋送予一 個或多個低壓氣體放電燈之電路配置， 圖2表示一具有矩狀信號波形之時序圖， 圖3表示一具有正弦曲線之時序圖， 圖4表示一具有兩相位偏移180。之正弦曲線之時序圖， 圖5表示一用於將直流電流轉換成交流電流並饋送予一 個或多個低壓氣體放電燈之第二電路配置， 圖6表示一用於將直流電流轉換成交流電流並饋送予一 個或多個低壓氣體放電燈之第三電路配置， -11- 1277369 ⑺ 發興說明纘頁 圖7表示一用於將直流電流轉換成交流電流並饋送予一 個或多個低壓氣體放電燈之第四電路配置， 圖8表示一描繪電壓比例對頻率關係之曲線圖。 圖示代表符號說明 1 電路配置 2 全橋式反相器 3 電壓源 4 低通濾.波器 5 低通渡波器 6 燈切換電路 7 低通濾、波器 8 低通渡波器 9 燈切換電路 10 導電線 11 導電線 12 導電線 13 控制電路 14 反相器 15 反相器 16 功率切換器 17 功率切換器 18 功奉切換器 19 功率切換器 20 串聯線圈 21 串聯線圈Figure 1 shows a circuit configuration for converting a direct current into an alternating current and feeding it to one or more low-pressure gas discharge lamps. Figure 2 shows a timing diagram with a rectangular signal waveform, and Figure 3 shows a timing with a sinusoidal curve. Figure 4 shows a phase offset 180. A timing diagram of a sinusoidal curve, FIG. 5 shows a second circuit configuration for converting a direct current into an alternating current and feeding it to one or more low pressure gas discharge lamps, and FIG. 6 shows a method for converting a direct current into an alternating current. And feeding the third circuit configuration of one or more low-pressure gas discharge lamps, -11- 1277369 (7) 发 缵 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图 图The fourth circuit configuration of the lamp, Figure 8 shows a plot of voltage versus frequency. Graphical representation of the symbol 1 Circuit configuration 2 Full-bridge inverter 3 Voltage source 4 Low-pass filter. Waver 5 Low-pass waver 6 Lamp switching circuit 7 Low-pass filter, waver 8 Low-pass waver 9 Lamp switching circuit 10 Conductive wire 11 Conductor wire 12 Conductor wire 13 Control circuit 14 Inverter 15 Inverter 16 Power switcher 17 Power switcher 18 Power switcher 19 Power switcher 20 Series coil 21 Series coil
-12- ⑻ 發興說稱縷頁 電容器 電容器 燈 節點 節點 矩狀信號波形 正弦基本波 第二正弦基本波 電壓振幅 第二電路配置 低通濾、波器 低通濾波器 第三電路配置 燈切換電路 燈切換電路 電容器 線圈 電容器 第四電路配置 電容器 電容器 啟铪頻率 點亮頻率 操作頻率 -13--12- (8) Development said that the page capacitor capacitor lamp node node moment signal waveform sinusoidal fundamental wave second sinusoidal fundamental wave voltage amplitude second circuit configuration low pass filter, wave low pass filter third circuit configuration lamp switching circuit Lamp switching circuit capacitor coil capacitor fourth circuit configuration capacitor capacitor starting frequency lighting frequency operating frequency-13-